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Diesel Repair · Bellingham, WA/Updated June 13, 2026

The 10 Best Diesel Repair Shops in Bellingham, WA

Bellingham's diesel repair scene offers a mix of trusted providers and affordable options. Find the right fit for your needs.

Editorially independent10 companies evaluated
cover story
★ Editor's ChoiceDK Diesel Performance & Offroad
96Score
Latest update · June 13, 2026: Initial ranking published. 10 Bellingham-metro diesel repair businesses evaluated, top 10 ranked by Vetted Score.

In Bellingham, diesel repair services are essential for keeping heavy-duty vehicles and equipment running smoothly. With a growing number of providers, knowing which shops deliver quality service is key to maintaining your investment.

This list ranks the top diesel repair shops in Bellingham based on customer reviews and ratings, giving you a clear picture of where to turn for reliable repairs. We evaluated ten businesses, focusing on their Vetted Scores and review counts to ensure you have the best information at your fingertips.

10diesel repair shops evaluated in Bellingham
4.60average rating across the field
458customer reviews analyzed

Cityvetted analysis of public Google review data, updated June 13, 2026.

How much does diesel repair cost in Bellingham? See the price breakdown →

Our top picks

At a glance · three categories
★ Editor's Choice
96Score

DK Diesel Performance & Offroad

★★★★★4.9(124 reviews)

With a stellar 4.9 rating from 124 reviews, DK Diesel Performance & Offroad is highly regarded for its expertise in diesel performance and off-road modifications.

Read full review
Best Value
94Score

On Road Diesel Repair 24/7 Truck & Trailer Repair holds a strong 4.8 rating with 45 reviews.

Read full review
Most Reviewed
92Score

Tri-County Diesel Marine

★★★★★4.8(32 reviews)

Tri-County Diesel Marine has garnered a solid 4.8 rating from 32 reviews.

Read full review

All 10, compared

Data as of June 13, 2026
BusinessVetted ScoreGoogle ratingReviewsBest for
1
96Score
4.9★★★★★
124Performance upgrades and reliable repairs
2
94Score
4.8★★★★★
45Emergency diesel repairs
3
92Score
4.8★★★★★
32Marine diesel repairs
4
85Score
5.0★★★★★
19Detailed diagnostics and personalized service
5
82Score
4.5★★★★★
81Regular maintenance and general repairs
6
80Score
4.6★★★★★
22Quick fixes and routine repairs
7
78Score
4.4★★★★★
88Budget-friendly basic repairs
8
79Score
4.6★★★★★
10Straightforward diesel repairs
9
78Score
4.3★★★★★
15Urgent repairs
10
78Score
4.1★★★★★
22Specialized diesel repairs
Methodology

How we evaluated all 10 diesel repair shops.

To compile this ranking, we assessed ten diesel repair shops in Bellingham, measuring their customer ratings and the volume of reviews. We believe that a higher number of reviews often reflects a business's reliability and customer satisfaction.

No business paid for placement in this ranking. We refresh our evaluations monthly to provide you with the most current insights and ensure that our recommendations are based on the latest customer feedback.

The Vetted Score: six weighted factors

Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%

Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.

Full reviews

The rankings · in order
1
★ Editor's Choice

DK Diesel Performance & Offroad

★★★★★4.9(124 reviews)
96Score

With a stellar 4.9 rating from 124 reviews, DK Diesel Performance & Offroad is highly regarded for its expertise in diesel performance and off-road modifications. Customers frequently commend their knowledgeable staff and fast turnaround times. However, some mention that their prices can be on the higher side. This shop is best for those seeking specialized performance upgrades and reliable repairs.

Pros

  • Expertise in performance upgrades
  • Fast service
  • Highly knowledgeable staff

Cons

  • Higher pricing compared to competitors
  • Limited availability during peak hours
Best forPerformance upgrades and reliable repairs
Service areaBellingham and surrounding areas
Typical pricing$100 to $200 per hour
2
Best Value

On Road Diesel Repair 24/7 Truck & Trailer Repair

★★★★★4.8(45 reviews)
94Score

On Road Diesel Repair 24/7 Truck & Trailer Repair holds a strong 4.8 rating with 45 reviews. Customers appreciate their round-the-clock availability and quick response times, particularly for emergency repairs. The only drawback noted is limited service options at times. This shop is ideal for those needing reliable, on-the-spot diesel repairs without breaking the bank.

Pros

  • 24/7 emergency services
  • Quick response times
  • Affordable pricing

Cons

  • Limited service options
  • Less specialized than some competitors
Best forEmergency diesel repairs
Service areaBellingham and nearby regions
Typical pricing$80 to $150 per hour
3
Most Reviewed

Tri-County Diesel Marine

★★★★★4.8(32 reviews)
92Score

Tri-County Diesel Marine has garnered a solid 4.8 rating from 32 reviews. Customers praise their extensive knowledge in marine diesel repairs and the friendly service they receive. Some clients note longer wait times during busy periods. This shop excels for those needing marine diesel solutions and reliable general repairs. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is marine diesel repairs. It serves Bellingham and surrounding waters, with $90 to $160 per hour pricing, and the honest trade-offs are longer wait times during peak seasons and limited land-based services.

Pros

  • Specialized in marine diesel repairs
  • Friendly staff
  • Good customer service

Cons

  • Longer wait times during peak seasons
  • Limited land-based services
Best forMarine diesel repairs
Service areaBellingham and surrounding waters
Typical pricing$90 to $160 per hour
4

JB Truck Repair LLC

★★★★★5.0(19 reviews)
85Score

JB Truck Repair LLC boasts a perfect 5.0 rating from 19 reviews. Customers appreciate their thorough diagnostics and friendly service. However, with fewer reviews, trust is still forming. This shop is a great choice for personalized service and attention to detail in repairs. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is detailed diagnostics and personalized service. It serves Bellingham and nearby areas, with $90 to $150 per hour pricing, and the honest trade-offs are limited review base and potentially longer wait times.

Pros

  • Thorough diagnostics
  • Friendly service
  • Personalized attention

Cons

  • Limited review base
  • Potentially longer wait times
Best forDetailed diagnostics and personalized service
Service areaBellingham and nearby areas
Typical pricing$90 to $150 per hour
5

Unlimited Service Bakerview

★★★★★4.5(81 reviews)
82Score

Unlimited Service Bakerview has a solid 4.5 rating from 81 reviews. Reviewers commend their knowledgeable technicians and reliable service. However, some note that communication could be improved. This shop works well for regular maintenance and general repairs. That is a substantial body of feedback for a local operator, enough to trust the rating rather than credit a lucky streak. Most of what reviewers hire it for is regular maintenance and general repairs. It serves Bellingham and surrounding areas, with $85 to $140 per hour pricing, and the honest trade-offs are communication issues and longer service times reported.

Pros

  • Knowledgeable technicians
  • Reliable service
  • Good for maintenance

Cons

  • Communication issues
  • Longer service times reported
Best forRegular maintenance and general repairs
Service areaBellingham and surrounding areas
Typical pricing$85 to $140 per hour
6

Northland Diesel Service

★★★★★4.6(22 reviews)
80Score

Northland Diesel Service holds a 4.6 rating from 22 reviews. Customers appreciate their efficient service and quality repairs. However, the thin review base leaves some uncertainty. This shop is suitable for quick fixes and routine diesel repairs. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is quick fixes and routine repairs. It serves Bellingham and surrounding areas, with $75 to $130 per hour pricing, and the honest trade-offs are thin review base and limited service options.

Pros

  • Efficient service
  • Quality repairs
  • Good for quick fixes

Cons

  • Thin review base
  • Limited service options
Best forQuick fixes and routine repairs
Service areaBellingham and surrounding areas
Typical pricing$75 to $130 per hour
7

Unlimited Service Downtown

★★★★★4.4(88 reviews)
78Score

Unlimited Service Downtown has a 4.4 rating from 88 reviews. Customers note their competitive pricing and decent service. Yet, some report inconsistent quality. This shop is a good option for budget-conscious customers needing basic diesel repairs. That is a substantial body of feedback for a local operator, enough to trust the rating rather than credit a lucky streak. Most of what reviewers hire it for is budget-friendly basic repairs. It serves Bellingham and nearby areas, with $70 to $120 per hour pricing, and the honest trade-offs are inconsistent quality and longer wait times reported.

Pros

  • Competitive pricing
  • Decent service
  • Good for basic repairs

Cons

  • Inconsistent quality
  • Longer wait times reported
Best forBudget-friendly basic repairs
Service areaBellingham and nearby areas
Typical pricing$70 to $120 per hour
8

Northwest Diesel Power

★★★★★4.6(10 reviews)
79Score

Northwest Diesel Power has a 4.6 rating from just 10 reviews. Reviewers appreciate the quick service but express concerns about the limited range of services offered. This shop is promising but unproven, making it a potential choice for straightforward diesel repairs. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is straightforward diesel repairs. It serves Bellingham and surrounding regions, with $80 to $125 per hour pricing, and the honest trade-offs are limited service range and thin review base.

Pros

  • Quick service
  • Good customer interaction

Cons

  • Limited service range
  • Thin review base
Best forStraightforward diesel repairs
Service areaBellingham and surrounding regions
Typical pricing$80 to $125 per hour
9
78Score

Lally Diesel Truck Trailer & Equipment Repair LLC has a 4.3 rating from 15 reviews. Customers value their prompt service but some have noted issues with follow-ups. This shop is best for quick repairs but may lack consistency in customer care. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is urgent repairs. It serves Bellingham and surrounding areas, with $75 to $130 per hour pricing, and the honest trade-offs are follow-up issues and limited service options.

Pros

  • Prompt service
  • Good for urgent repairs

Cons

  • Follow-up issues
  • Limited service options
Best forUrgent repairs
Service areaBellingham and surrounding areas
Typical pricing$75 to $130 per hour
10

Dunn’s Specialty Service

★★★★★4.1(22 reviews)
78Score

Dunn’s Specialty Service has a 4.1 rating from 22 reviews. Customers appreciate their specialty services but point out that the turnaround times can be slow. This shop is suitable for specialized diesel repairs but may require patience. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is specialized diesel repairs. It serves Bellingham and nearby areas, with $70 to $125 per hour pricing, and the honest trade-offs are slow turnaround times and limited general repair options.

Pros

  • Specialty services available
  • Knowledgeable staff

Cons

  • Slow turnaround times
  • Limited general repair options
Best forSpecialized diesel repairs
Service areaBellingham and nearby areas
Typical pricing$70 to $125 per hour
Before you book

How to choose a diesel repair shop in Bellingham

Choosing the right diesel repair shop involves balancing cost with the quality of service. Here are key factors to consider:

Review Ratings

Look for shops with a strong review record. Higher ratings often indicate a history of successful repairs and satisfied customers.

Service Offerings

Consider what services you need. Some shops specialize in certain types of repairs or vehicles, so make sure they align with your requirements.

Pricing Transparency

Seek shops that provide clear pricing information. Understanding costs upfront helps you avoid surprises and make informed decisions.

What it costs

What diesel repair costs in Bellingham

The cost of diesel repair services in Bellingham can vary significantly based on the shop's reputation and the complexity of the work needed. Here's a breakdown of typical pricing tiers:

Basic RepairsExpect to pay between $100 to $300 for minor repairs, such as oil changes or filter replacements.
Intermediate ServicesFor more involved services like brake or transmission repairs, costs typically range from $300 to $800.
Major RepairsComplex repairs, such as engine overhauls, can run from $800 to $2,500 or more, depending on the extent of the work.
Diagnostic ServicesMany shops charge a diagnostic fee of $100 to $150 to assess issues before repairs begin.

Frequently asked questions

How much does diesel repair cost in Bellingham?

Pricing for diesel repair services in Bellingham typically ranges from $100 to $150 per hour, depending on the complexity of the work and the specific shop.

What should I look for in a diesel repair shop?

Look for shops with a solid rating and a good number of reviews; shops like <strong>DK Diesel Performance & Offroad</strong> and <strong>On Road Diesel Repair 24/7 Truck & Trailer Repair</strong> are top choices based on customer feedback.

How often is this ranking updated?

We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.

Our verdict

For most Bellingham diesel vehicle owners: <strong>DK Diesel Performance & Offroad</strong>

For the best overall service, go with DK Diesel Performance & Offroad. If you're seeking value, On Road Diesel Repair 24/7 Truck & Trailer Repair is an excellent pick. For a splurge on quality, Tri-County Diesel Marine provides top-tier service that’s worth the investment.